Implement Std traits for SceneInstanceReady

[daxpedda]

Objective

Being able to do:

ev_scene_ready.read().next().unwrap();

Which currently isn't possible because SceneInstanceReady doesn't implement Debug.

Solution

Implement Debug for SceneInstanceReady.

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Changelog

Added

• Implement Std traits for SceneInstanceReady.

[mockersf]

ev_scene_ready.read().next().unwrap();

Which currently isn't possible because SceneInstanceReady doesn't implement Debug.

Could you expand on that? It shouldn't have any relation

[daxpedda]

ev_scene_ready.read().next().unwrap();

Which currently isn't possible because SceneInstanceReady doesn't implement Debug.

Could you expand on that? It shouldn't have any relation

Uh, sorry, I forgot that unwrap() only requires E: Debug on Result<T, E> and not Option<T> (no E there).

My use-case actually looked like this:

use itertools::Itertools;

ev_scene_ready.read().exactly_one().unwrap();

See Itertools::exactly_one().

I also implemented PartialEq and Eq to make comparisons simpler, which I used afterwards to assert that this is all the same scene after I discovered #11002.

Personally I didn't need Clone and Copy, but it didn't look like it would hurt.